Golang log.Debug函数代码示例

func (handler *VMessOutboundHandler) startCommunicate(request *vmessio.VMessRequest, dest v2net.Address, ray core.OutboundRay) error {
	conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{dest.IP, int(dest.Port), ""})
	log.Debug("VMessOutbound dialing tcp: %s", dest.String())
	if err != nil {
		log.Error("Failed to open tcp (%s): %v", dest.String(), err)
		return err
	}
	defer conn.Close()

	input := ray.OutboundInput()
	output := ray.OutboundOutput()

	requestWriter := vmessio.NewVMessRequestWriter()
	err = requestWriter.Write(conn, request)
	if err != nil {
		log.Error("Failed to write VMess request: %v", err)
		close(output)
		return err
	}

	requestKey := request.RequestKey[:]
	requestIV := request.RequestIV[:]
	responseKey := md5.Sum(requestKey)
	responseIV := md5.Sum(requestIV)

	response := vmessio.VMessResponse{}
	nBytes, err := conn.Read(response[:])
	if err != nil {
		close(output)
		log.Error("Failed to read VMess response (%d bytes): %v", nBytes, err)
		return err
	}
	log.Debug("Got response %v", response)
	// TODO: check response

	encryptRequestWriter, err := v2io.NewAesEncryptWriter(requestKey, requestIV, conn)
	if err != nil {
		close(output)
		log.Error("Failed to create encrypt writer: %v", err)
		return err
	}
	decryptResponseReader, err := v2io.NewAesDecryptReader(responseKey[:], responseIV[:], conn)
	if err != nil {
		close(output)
		log.Error("Failed to create decrypt reader: %v", err)
		return err
	}

	readFinish := make(chan bool)
	writeFinish := make(chan bool)

	go handler.dumpInput(encryptRequestWriter, input, readFinish)
	go handler.dumpOutput(decryptResponseReader, output, writeFinish)

	<-readFinish
	conn.CloseWrite()
	log.Debug("VMessOut closing write")
	<-writeFinish
	return nil
}

func startCommunicate(request *vmessio.VMessRequest, dest v2net.Address, ray core.OutboundRay) error {
	input := ray.OutboundInput()
	output := ray.OutboundOutput()

	conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{dest.IP, int(dest.Port), ""})
	log.Debug("VMessOutbound dialing tcp: %s", dest.String())
	if err != nil {
		log.Error("Failed to open tcp (%s): %v", dest.String(), err)
		close(output)
		return err
	}

	log.Debug("VMessOut: Tunneling request for %s", request.Address.String())

	defer conn.Close()

	requestFinish := make(chan bool)
	responseFinish := make(chan bool)

	go handleRequest(conn, request, input, requestFinish)
	go handleResponse(conn, request, output, responseFinish)

	<-requestFinish
	conn.CloseWrite()
	<-responseFinish
	return nil
}

func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error {
	defer connection.Close()

	reader := vmessio.NewVMessRequestReader(handler.clients)

	request, err := reader.Read(connection)
	if err != nil {
		log.Debug("Failed to parse VMess request: %v", err)
		return err
	}
	log.Debug("Received request for %s", request.Address.String())

	ray := handler.vPoint.NewInboundConnectionAccepted(request.Address)
	input := ray.InboundInput()
	output := ray.InboundOutput()

	readFinish := make(chan bool)
	writeFinish := make(chan bool)

	go handleInput(request, connection, input, readFinish)

	responseKey := md5.Sum(request.RequestKey[:])
	responseIV := md5.Sum(request.RequestIV[:])

	response := vmessio.NewVMessResponse(request)
	responseWriter, err := v2io.NewAesEncryptWriter(responseKey[:], responseIV[:], connection)
	if err != nil {
		return log.Error("Failed to create encrypt writer: %v", err)
	}
	//responseWriter.Write(response[:])

	// Optimize for small response packet
	buffer := make([]byte, 0, 1024)
	buffer = append(buffer, response[:]...)
	data, open := <-output
	if open {
		buffer = append(buffer, data...)
	}
	responseWriter.Write(buffer)

	if open {
		go handleOutput(request, responseWriter, output, writeFinish)
	} else {
		close(writeFinish)
	}

	<-writeFinish
	if tcpConn, ok := connection.(*net.TCPConn); ok {
		log.Debug("VMessIn closing write")
		tcpConn.CloseWrite()
	}
	<-readFinish

	return nil
}

func (vconn *FreedomConnection) DumpInput(conn net.Conn, input <-chan []byte, finish chan<- bool) {
	for {
		data, open := <-input
		if !open {
			finish <- true
			log.Debug("Freedom finishing input.")
			break
		}
		nBytes, err := conn.Write(data)
		log.Debug("Freedom wrote %d bytes with error %v", nBytes, err)
	}
}

func (server *SocksServer) dumpOutput(conn net.Conn, output <-chan []byte, finish chan<- bool) {
	for {
		buffer, open := <-output
		if !open {
			finish <- true
			log.Debug("Socks finishing output")
			break
		}
		nBytes, err := conn.Write(buffer)
		log.Debug("Writing %d bytes with error %v", nBytes, err)
	}
}

func (handler *VMessOutboundHandler) dumpInput(writer io.Writer, input <-chan []byte, finish chan<- bool) {
	for {
		buffer, open := <-input
		if !open {
			finish <- true
			log.Debug("VMessOutbound finishing input.")
			break
		}
		nBytes, err := writer.Write(buffer)
		log.Debug("VMessOutbound: Wrote %d bytes with error %v", nBytes, err)
	}
}

func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error {
	defer connection.Close()

	reader := vmessio.NewVMessRequestReader(handler.clients)

	request, err := reader.Read(connection)
	if err != nil {
		log.Debug("Failed to parse VMess request: %v", err)
		return err
	}
	log.Debug("Received request for %s", request.Address.String())

	response := vmessio.NewVMessResponse(request)
	nBytes, err := connection.Write(response[:])
	if err != nil {
		return log.Error("Failed to write VMess response (%d bytes): %v", nBytes, err)
	}

	requestKey := request.RequestKey[:]
	requestIV := request.RequestIV[:]
	responseKey := md5.Sum(requestKey)
	responseIV := md5.Sum(requestIV)

	requestReader, err := v2io.NewAesDecryptReader(requestKey, requestIV, connection)
	if err != nil {
		return log.Error("Failed to create decrypt reader: %v", err)
	}

	responseWriter, err := v2io.NewAesEncryptWriter(responseKey[:], responseIV[:], connection)
	if err != nil {
		return log.Error("Failed to create encrypt writer: %v", err)
	}

	ray := handler.vPoint.NewInboundConnectionAccepted(request.Address)
	input := ray.InboundInput()
	output := ray.InboundOutput()

	readFinish := make(chan bool)
	writeFinish := make(chan bool)

	go handler.dumpInput(requestReader, input, readFinish)
	go handler.dumpOutput(responseWriter, output, writeFinish)

	<-writeFinish
	if tcpConn, ok := connection.(*net.TCPConn); ok {
		log.Debug("VMessIn closing write")
		tcpConn.CloseWrite()
	}
	<-readFinish

	return nil
}

func (vconn *FreedomConnection) DumpOutput(conn net.Conn, output chan<- []byte, finish chan<- bool) {
	for {
		buffer := make([]byte, 512)
		nBytes, err := conn.Read(buffer)
		log.Debug("Freedom reading %d bytes with error %v", nBytes, err)
		if err == io.EOF {
			close(output)
			finish <- true
			log.Debug("Freedom finishing output.")
			break
		}
		output <- buffer[:nBytes]
	}
}

func (handler *VMessOutboundHandler) dumpOutput(reader io.Reader, output chan<- []byte, finish chan<- bool) {
	for {
		buffer := make([]byte, BufferSize)
		nBytes, err := reader.Read(buffer)
		log.Debug("VMessOutbound: Reading %d bytes, with error %v", nBytes, err)
		if err == io.EOF {
			close(output)
			finish <- true
			log.Debug("VMessOutbound finishing output.")
			break
		}
		output <- buffer[:nBytes]
	}
}

func (server *SocksServer) dumpInput(conn net.Conn, input chan<- []byte, finish chan<- bool) {
	for {
		buffer := make([]byte, 512)
		nBytes, err := conn.Read(buffer)
		log.Debug("Reading %d bytes, with error %v", nBytes, err)
		if err == io.EOF {
			close(input)
			finish <- true
			log.Debug("Socks finishing input.")
			break
		}
		input <- buffer[:nBytes]
	}
}

func (vconn *FreedomConnection) CloseConn(conn net.Conn, readFinish <-chan bool, writeFinish <-chan bool) {
	<-writeFinish
	if tcpConn, ok := conn.(*net.TCPConn); ok {
		log.Debug("Closing freedom write.")
		tcpConn.CloseWrite()
	}
	<-readFinish
	conn.Close()
}

func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error {
	defer connection.Close()
	reader := vmessio.NewVMessRequestReader(handler.clients)

	request, err := reader.Read(connection)
	if err != nil {
		return err
	}
	log.Debug("Received request for %s", request.Address.String())

	response := vmessio.NewVMessResponse(request)
	nBytes, err := connection.Write(response[:])
	log.Debug("Writing VMess response %v", response)
	if err != nil {
		return log.Error("Failed to write VMess response (%d bytes): %v", nBytes, err)
	}

	requestKey := request.RequestKey[:]
	requestIV := request.RequestIV[:]
	responseKey := md5.Sum(requestKey)
	responseIV := md5.Sum(requestIV)

	requestReader, err := v2io.NewAesDecryptReader(requestKey, requestIV, connection)
	if err != nil {
		return log.Error("Failed to create decrypt reader: %v", err)
	}

	responseWriter, err := v2io.NewAesEncryptWriter(responseKey[:], responseIV[:], connection)
	if err != nil {
		return log.Error("Failed to create encrypt writer: %v", err)
	}

	ray := handler.vPoint.NewInboundConnectionAccepted(request.Address)
	input := ray.InboundInput()
	output := ray.InboundOutput()
	finish := make(chan bool, 2)

	go handler.dumpInput(requestReader, input, finish)
	go handler.dumpOutput(responseWriter, output, finish)
	handler.waitForFinish(finish)

	return nil
}

// Read reads blocks from underlying reader, the length of blocks must be
// a multiply of BlockSize()
func (reader CryptionReader) Read(blocks []byte) (int, error) {
	nBytes, err := reader.reader.Read(blocks)
	log.Debug("CryptionReader: Read %d bytes", nBytes)
	if nBytes > 0 {
		reader.stream.XORKeyStream(blocks[:nBytes], blocks[:nBytes])
	}
	if err != nil {
		log.Error("Error reading blocks: %v", err)
	}
	return nBytes, err
}

func (server *SocksServer) dumpOutput(conn net.Conn, output <-chan []byte, finish chan<- bool) {
	for {
		buffer, open := <-output
		if !open {
			finish <- true
			break
		}
		nBytes, _ := conn.Write(buffer)
		log.Debug("Writing %d bytes", nBytes)
	}
}

func (server *SocksServer) Listen(port uint16) error {
	listener, err := net.Listen("tcp", ":"+strconv.Itoa(int(port)))
	if err != nil {
		log.Error("Error on listening port %d: %v", port, err)
		return err
	}
	log.Debug("Working on tcp:%d", port)
	server.accepting = true
	go server.AcceptConnections(listener)
	return nil
}